Greptile Summary

Added documentation for the baudbot attach command and a new section explaining the Slack broker feature, including its two setup options (custom app vs hosted broker) and key security characteristics.

• Added sudo baudbot attach command example in Quick Start section
• New "The Slack broker (optional)" section explaining remote Slack integration options
• Clear explanation of broker functionality: encrypted message forwarding, PII stripping, and pull-only architecture
• Emphasizes security model: broker doesn't have access to Baudbot instance

Confidence Score: 5/5

• This PR is safe to merge with no issues
• Documentation-only PR that adds clear, accurate information about existing features without any code changes or logical issues
• No files require special attention

Important Files Changed

_{Last reviewed commit: 1d55c45}